We're dividing 99215561 by 425 
We want to divide 99215561 by 425.

Let's proceed to step 1:
425 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 425

Going ahead to step 2:
If we divide 99 by 425, we get 0 and a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Include the next digit (2) from the dividend after 99, then repeat: 992 / 425

Advancing to step 3:
The number 425 fits into 992 2 times, leaving a remainder of 142.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 850 from 992 leaves us with 142.
Take the next digit (1) from the dividend and append it to 142, then repeat: 1421 / 425

Moving on to step 4:
425 can be fit into 1421 3 times, resulting in a remainder of 146.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we subtract 1275 from 1421, we get 146.
Grab the next digit (5) from the dividend, add it to 146, then carry on: 1465 / 425

On to step 5:
The number 425 fits into 1465 3 times, leaving a remainder of 190.
The number 3 becomes the next digit in our result. 
Result so far: 233.0
Subtract 1275 from 1465 to get 190.
Grab the next digit (5) from the dividend, add it to 190, then carry on: 1905 / 425

Let's proceed to step 6:
If we divide 1905 by 425, we get 4 and a remainder of 205.
The number 4 becomes the next digit in our result. 
Result so far: 2334.0
If we take 1700 away from 1905, we end up with 205.
Fetch the next digit (6) from the dividend, attach it to 205 and continue: 2056 / 425

Advancing to step 7:
425 goes into 2056 4 times with a remainder of 356.
The number 4 becomes the next digit in our result. 
Result so far: 23344.0
Subtracting 1700 from 2056 leaves us with 356.
Append the next digit (1) from the dividend to 356 and continue with: 3561 / 425

On to step 8:
The number 425 fits into 3561 8 times, leaving a remainder of 161.
The next digit of our result is 8. 
Result so far: 233448.0
Subtracting 3400 from 3561 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Let's proceed to step 9:
The number 425 fits into 1610 3 times, leaving a remainder of 335.
Record the quotient 3 as the next digit in the result. 
Result so far: 233448.3
If we take 1275 away from 1610, we end up with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Let's proceed to step 10:
The number 425 fits into 3350 7 times, leaving a remainder of 375.
The next digit of our result is 7. 
Result so far: 233448.37
If we take 2975 away from 3350, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 11:
If we divide 3750 by 425, we get 8 and a remainder of 350.
Record the quotient 8 as the next digit in the result. 
Result so far: 233448.378
The remainder is 350 after subtracting 3400 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 12:
If we divide 3500 by 425, we get 8 and a remainder of 100.
Put 8 as the next digit of the answer. 
Result so far: 233448.3788
Subtract 3400 from 3500 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The quotient of the division is 233448.3788, and the remainder is 0.001.